docs: def build(self, bug: Bug):
          """
          Instructs the server to build the Docker image associated with a given
          bug.
          """
          r = self.__api.post('bugs/{}/build'.format(bug.name))
  
          if r.status_code == 204:
              return
          if r.status_code == 200:
              raise Exception("bug already built: {}".format(bug.name))
          # TODO: implement ImageBuildFailed.from_dict
          if r.status_code == 400:
              raise Exception("build failure")
          if r.status_code == 404:
            raise KeyError("no bug found with given name: {}".format(bug.name))
  
          self.__api.handle_erroneous_response(r)